2. Describe the shape (i.e. parabola, ellipse, hyperbola, etc...) of the requested cross-section. a. the intersection of y = 1 and x + y = z b. the intersection of z = 1 and 2x+3y = z c. the intersection of x = 1 and x+3y = z d. the intersection of x=0 and x -5y = z H